Passport 7400/15000 Network Roles and Data Cells Overview

1. Introduction

2. Unit objectives After completing this unit, you will be able to • identify the roles of a Passport 7400 and 15000 in a network • identify types of data cells and how they are used by Passport • identify strengths of frame-based and cell-based services • distinguish between the 7400 bus and the 15000 fabric card

3. DPN network ATM network ATM Coreand Frame Relay Frame Relay network Passport 7400/15000 product overview Passport 7400 DPN gateway Router network Passport 15000 BTDS Passport network BTDS and HTDS Video network Legacy data network Voice network 1-3

4. Passport 7440 and 7480 Passport 7480 Passport 7440

5. Passport 15000/20000

6. Packets and frames compared to cells Data Partially filled data cell Larger header 1 large header < Many small headers

7. Backplane cell Header = 3 or 4 bytes 36 56 or 57 84 BTDS cells Payload = 36 to 84 bytes Backplane cell Backplane cell Padding Header = 5 bytes ATM cells Payload = 48 bytes Padding Backplane cell Passport cells Header = 3 bytes 1 byte CRC trailer Payload = 64 bytes 15000 backplane cells Header = 4 bytes 7400 backplane cells Payload = 60 bytes Header = 3 or 4 bytes Passport Voice Payload = 44 bytes Padding

8. Frames and cells Frames Payload ranges from 1 - 4096 bytes Frame is cut into 60-byte chunks to fit into the Backplane cells … Header contains reassembly information Padding to make up the 60-byte payload Backplane cells

9. Trunking Access Backplane cell Passport 7400/15000 switching Frames Function Processor Passport Frames and Cells Function Processor Passport Voice and BTDS cells Dual Buses and/or Fabric cards CBR Function Processor ATM cells Function Processor ATM cells Function Processor

10. Fabric attributes Redundant 56.3 Gbps Fabric Capacity - 16 x 3.52 Gbps throughput 16 x 2.5 Gbps for 40 Gbps user capacity Fabrics are redundant Removable and modular Upgradeable software. Fabric cards CARD CAGE 2 Redundant (1+1) control processor BITS (E1/T1) Ethernet,RS232 CP EXT CP 00 CP 01 FP 02 FP 03 FP 04 FP 05 FP 06 FP 07 X - FABRIC Redundant 3.5 G serial links (2.5 Gbps user) Y - FABRIC CP EXT FP 08 FP 09 FP 10 FP 11 FP 12 FP 13 FP 14 FP 15 CARD CAGE 1

11. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Fabric load sharing Slot numbers of receiving cards Note: The dark shading indicates that the sending card uses the X fabric transmit channels, while a light space indicates the Y fabric transmit channels are used. Slot numbers of transmitting cards

12. Passport 7400 bus Dual buses Bus terminator Bus terminator Control processor Spare control processor 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Function processors 1-14

13. Preside MDM FMIP Fault Text Interface (VT100) Local Operator VT100 Telnet Text Interface SNMP Passport Preside MDM Passport network management Security Configuration Accounting Performance For more information on Preside MDM, please refer to the Preside MDM course offered by Nortel Network.

14. Unit summary In this unit, you • identified the roles of a Passport 7400 and/or 15000 in the network • identified types of data cells and how they are used by Passport • identified strengths of frame-based and cell-based services • distinguished between the 7400 bus and 15000 fabric card.